Hi,
Basically, to keep a long story short, my shots start off quite good, often a bit on the slow side (dripping), but then end up quite fast. To give an idea of time, pre infusion is left set at the factory 7 sec, and the first drips out the spouts doesn't occur until about 14-16 seconds. even though its quite a big gap, it still looks ok for the first 5-10 seconds and then it will change quite quickly to a rather fast pour and total time is still around 35-40 sec on the shot clock, which is only 20-25 sec from when it started pouring, sometimes less.
I may be worrying for nothing as the coffee still tastes quite reasonable.
what i found when i first bought the 920, was that breville had got rid of the tapered sides in the double basket compared to the 900. due to my pullman tamper being matched to my old bes900, and the new bes920 basket being slightly bigger, i continued to use the double basket out of the 900 until i got around to getting a new tamper base matched to the 920 basket. This problem i mention didn't happen when using the 900 tapered sided basket, and i just assumed it was because the tamper didn't quite fit properly in the new, more vertical sides of the 920 basket.
so, i eventually got around to getting a new tamper base and bought a new pullman double basket to match it to. These look very similar to the 920 basket and i have read that the 920 breville baskets are actually quite well made. Anyway, what i discovered is that while having a tamper matched to the basket did help, it didn't completely solve the problem and i've been living with it since. thought it was time to get some thoughts off the forum.
i'm guessing that the different shaped basket is highlighting some flaws in my technique that the previous tapered sided basket was hiding. doing some research i think it may possibly be to do with distribution? i always fill the basket in 2 steps, knocking the portafilter on a rubber mat after each step to settle the grinds. then tamp, polish, wipe rim and tabs and insert etc. i've read that because these straight sided baskets also tend to have the holes extending a lot closer to the edge, that distribution is quite critical now and could be the cause of what i'm experiencing.
anyone else had similar issues?
i'll try filling the basket in a single step and then levelling off and tamping and see if that goes any different. machine is paired with the 820 smart grinder pro.
Basically, to keep a long story short, my shots start off quite good, often a bit on the slow side (dripping), but then end up quite fast. To give an idea of time, pre infusion is left set at the factory 7 sec, and the first drips out the spouts doesn't occur until about 14-16 seconds. even though its quite a big gap, it still looks ok for the first 5-10 seconds and then it will change quite quickly to a rather fast pour and total time is still around 35-40 sec on the shot clock, which is only 20-25 sec from when it started pouring, sometimes less.
I may be worrying for nothing as the coffee still tastes quite reasonable.
what i found when i first bought the 920, was that breville had got rid of the tapered sides in the double basket compared to the 900. due to my pullman tamper being matched to my old bes900, and the new bes920 basket being slightly bigger, i continued to use the double basket out of the 900 until i got around to getting a new tamper base matched to the 920 basket. This problem i mention didn't happen when using the 900 tapered sided basket, and i just assumed it was because the tamper didn't quite fit properly in the new, more vertical sides of the 920 basket.
so, i eventually got around to getting a new tamper base and bought a new pullman double basket to match it to. These look very similar to the 920 basket and i have read that the 920 breville baskets are actually quite well made. Anyway, what i discovered is that while having a tamper matched to the basket did help, it didn't completely solve the problem and i've been living with it since. thought it was time to get some thoughts off the forum.
i'm guessing that the different shaped basket is highlighting some flaws in my technique that the previous tapered sided basket was hiding. doing some research i think it may possibly be to do with distribution? i always fill the basket in 2 steps, knocking the portafilter on a rubber mat after each step to settle the grinds. then tamp, polish, wipe rim and tabs and insert etc. i've read that because these straight sided baskets also tend to have the holes extending a lot closer to the edge, that distribution is quite critical now and could be the cause of what i'm experiencing.
anyone else had similar issues?
i'll try filling the basket in a single step and then levelling off and tamping and see if that goes any different. machine is paired with the 820 smart grinder pro.

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